// overload6.cpp	By: Aiman Hanna -  ©1993-2006 Aiman Hanna
//
// This program illustrates how operators of the iostream class can be overloaded. 

//
// Key Points: 		1) Overloading operators of the iostream class
//			2) "friend" functions
		 
					


#include "overload6.h"



// Free function that overloads the iostream ">>" operator. 
// With this function it will be possible to input information 
// into a Vehicle object using cin >>.
istream& operator>> ( istream& is, Vehicle& vec )
{
 
 	is >> vec.numdoors >> vec.maxspeed >> vec.price;
 
 	return is; 
	    
}


// Free function that overloads the iostream "<<" operator. 
// With this function it will be possible to output all information
// of a Vehicle object using cout <<. 
ostream& operator<< ( ostream& os, Vehicle& vec )
{
 	os << " Here is the vehicle information: " << endl
	   << " the vehicle has " << vec.numdoors << " doors, maximum speed of " 
	   << vec.maxspeed << ", and its price is " << vec.price << endl << endl;
 
 	return os;
 
}



Vehicle::Vehicle( int nd, double mxspd, double pr )
{
  	numdoors = nd;
  	maxspeed = mxspd;
  	price = pr;

}



int Vehicle::GetNumDrs( void )
{
 	return numdoors;
}



void Vehicle::SetNumDrs( int nd )
{
 	numdoors = nd;
}



double Vehicle::GetmaxSpeed( void )
{
  	return maxspeed; 
}




void Vehicle::SetMaxSpeed( double mxspd)
{
  	maxspeed = mxspd;

}



double Vehicle::GetPrice( void )
{
 	return price;

}



void Vehicle::SetPrice( double pr )
{
 	price = pr;

}




int main()
{
 	Vehicle v1(2, 180, 22000), v2(3, 220, 12000), v3(5, 240, 8000);
 

 	cout << "\n Here is the information of v1: " << endl;
 	cout << " ============================== " << endl;
 	cout << v1;

 	cout << "\n Here is the information of v2: " << endl;
 	cout << " ============================== " << endl;
 	cout << v2;

 	cout << "\n Here is the information of v3: " << endl;
 	cout << " ============================== " << endl;
 	cout << v3;


 	cout << " Updating v1 and v2 information: "
	     << " \n ============================= " << endl << endl;

 	cout << " Enter the number of doors, the maximum speed " 
      	     << " and the price of the two vehicles: ";
 
 	cin >> v1;
 	cin >> v2;

 	cout << "\n Here is the information of v1 after being updated: " << endl;
 	cout << " ==================================================== " << endl;
 	cout << v1;

 	cout << "\n Here is the information of v2 after being updated: " << endl;
 	cout << " ==================================================== " << endl;
 	cout << v2;


 	cout << " Updating v1, v2 and v3 information: "
	     << " \n ============================= " << endl << endl;

 	cout << " Enter the number of doors, the maximum speed "  
             << " and the price of the three vehicles: ";
 
 	cin >> v1 >> v2 >> v3;
 

 	cout << "\n Here is the information of v1 after being updated: " << endl;
 	cout << " ==================================================== " << endl;
 	cout << v1;

 	cout << "\n Here is the information of v2 after being updated: " << endl;
 	cout << " ==================================================== " << endl;
 	cout << v2;

 	cout << "\n Here is the information of v3: " << endl;
 	cout << " ============================== " << endl;
 	cout << v3;

 
 	return 0;
}


// The result of running the program 
/*
 
  
 Here is the information of v1:
 ==============================
 Here is the vehicle information:
 the vehicle has 2 doors, maximum speed of 180, and its price is 22000


 Here is the information of v2:
 ==============================
 Here is the vehicle information:
 the vehicle has 3 doors, maximum speed of 220, and its price is 12000


 Here is the information of v3:
 ==============================
 Here is the vehicle information:
 the vehicle has 5 doors, maximum speed of 240, and its price is 8000

 Updating v1 and v2 information:
 =============================

 Enter the number of doors, the maximum speed  and the price of the two vehicle: 
 4 140 2000
 5 160 3000

 Here is the information of v1 after being updated:
 ====================================================
 Here is the vehicle information:
 the vehicle has 4 doors, maximum speed of 140, and its price is 2000


 Here is the information of v2 after being updated:
 ====================================================
 Here is the vehicle information:
 the vehicle has 5 doors, maximum speed of 160, and its price is 3000

 Updating v1, v2 and v3 information:
 =============================

 Enter the number of doors, the maximum speed  and the price of the three vehices:
 2 200 10000
 4 220 15000 5 240 20000

 Here is the information of v1 after being updated:
 ====================================================
 Here is the vehicle information:
 the vehicle has 2 doors, maximum speed of 200, and its price is 10000


 Here is the information of v2 after being updated:
 ====================================================
 Here is the vehicle information:
 the vehicle has 4 doors, maximum speed of 220, and its price is 15000


 Here is the information of v3:
 ==============================
 Here is the vehicle information:
 the vehicle has 5 doors, maximum speed of 240, and its price is 20000


*/